<link rel="import" href="core-style.html">

<script>

  CoreStyle.g.theme = {
    colorOne: '#abcdef',
    colorTwo: '#123456',
    colorThree: '#224433'
  }
</script>

<core-style id="main">
  body {
    font-family: sans-serif;
  }

  section {
    overflow: auto;
  }

  button {
    border: 1px solid {{g.theme.colorOne | cycle(-50)}};
    border-radius: 4px;
    background-color: {{g.theme.colorOne}};
    color: {{g.theme.colorTwo}};
  }

  button:active {
    border: 1px solid {{g.theme.colorTwo | cycle(50)}};
    border-radius: 4px;
    background-color: {{g.theme.colorTwo}};
    color: {{g.theme.colorOne}};
  }

  <template repeat="{{item in g.items}}">
    my-panel:nth-of-type({{item+1}}) {
      background-color: {{ g.theme.colorThree | cycle(item * -1) }};
    }
  </template>
</core-style>

<core-style id="my-toolbar">
  :host {
    border-bottom: 8px solid {{g.theme.colorOne}};
    color: {{g.theme.colorOne | cycle(100)}};
    background-color: {{g.theme.colorTwo}};
  }
</core-style>

<core-style id="my-panel">
  :host {
    box-sizing: border-box;
    background-color: {{g.theme.colorOne}};
    border: 8px solid {{g.theme.colorOne | cycle(50)}};
    color: {{g.theme.colorOne | cycle(-100)}};
  }

  :host(:nth-of-type(2n + 1)) {
    background-color: {{g.theme.colorTwo}};
    border: 8px solid {{g.theme.colorTwo | cycle(-50)}};
    color: {{g.theme.colorTwo | cycle(100)}}
  }

</core-style>